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Diffstat (limited to '3rdparty/SDL2/src/joystick/SDL_joystick.c')
-rw-r--r--3rdparty/SDL2/src/joystick/SDL_joystick.c929
1 files changed, 0 insertions, 929 deletions
diff --git a/3rdparty/SDL2/src/joystick/SDL_joystick.c b/3rdparty/SDL2/src/joystick/SDL_joystick.c
deleted file mode 100644
index c426a39e516..00000000000
--- a/3rdparty/SDL2/src/joystick/SDL_joystick.c
+++ /dev/null
@@ -1,929 +0,0 @@
-/*
- Simple DirectMedia Layer
- Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org>
-
- This software is provided 'as-is', without any express or implied
- warranty. In no event will the authors be held liable for any damages
- arising from the use of this software.
-
- Permission is granted to anyone to use this software for any purpose,
- including commercial applications, and to alter it and redistribute it
- freely, subject to the following restrictions:
-
- 1. The origin of this software must not be misrepresented; you must not
- claim that you wrote the original software. If you use this software
- in a product, an acknowledgment in the product documentation would be
- appreciated but is not required.
- 2. Altered source versions must be plainly marked as such, and must not be
- misrepresented as being the original software.
- 3. This notice may not be removed or altered from any source distribution.
-*/
-#include "../SDL_internal.h"
-
-/* This is the joystick API for Simple DirectMedia Layer */
-
-#include "SDL.h"
-#include "SDL_events.h"
-#include "SDL_sysjoystick.h"
-#include "SDL_assert.h"
-#include "SDL_hints.h"
-
-#if !SDL_EVENTS_DISABLED
-#include "../events/SDL_events_c.h"
-#endif
-
-static SDL_bool SDL_joystick_allows_background_events = SDL_FALSE;
-static SDL_Joystick *SDL_joysticks = NULL;
-static SDL_Joystick *SDL_updating_joystick = NULL;
-
-static void
-SDL_JoystickAllowBackgroundEventsChanged(void *userdata, const char *name, const char *oldValue, const char *hint)
-{
- if (hint && *hint == '1') {
- SDL_joystick_allows_background_events = SDL_TRUE;
- } else {
- SDL_joystick_allows_background_events = SDL_FALSE;
- }
-}
-
-int
-SDL_JoystickInit(void)
-{
- int status;
-
- /* See if we should allow joystick events while in the background */
- SDL_AddHintCallback(SDL_HINT_JOYSTICK_ALLOW_BACKGROUND_EVENTS,
- SDL_JoystickAllowBackgroundEventsChanged, NULL);
-
-#if !SDL_EVENTS_DISABLED
- if (SDL_InitSubSystem(SDL_INIT_EVENTS) < 0) {
- return -1;
- }
-#endif /* !SDL_EVENTS_DISABLED */
-
- status = SDL_SYS_JoystickInit();
- if (status >= 0) {
- status = 0;
- }
- return (status);
-}
-
-/*
- * Count the number of joysticks attached to the system
- */
-int
-SDL_NumJoysticks(void)
-{
- return SDL_SYS_NumJoysticks();
-}
-
-/*
- * Get the implementation dependent name of a joystick
- */
-const char *
-SDL_JoystickNameForIndex(int device_index)
-{
- if ((device_index < 0) || (device_index >= SDL_NumJoysticks())) {
- SDL_SetError("There are %d joysticks available", SDL_NumJoysticks());
- return (NULL);
- }
- return (SDL_SYS_JoystickNameForDeviceIndex(device_index));
-}
-
-/*
- * Open a joystick for use - the index passed as an argument refers to
- * the N'th joystick on the system. This index is the value which will
- * identify this joystick in future joystick events.
- *
- * This function returns a joystick identifier, or NULL if an error occurred.
- */
-SDL_Joystick *
-SDL_JoystickOpen(int device_index)
-{
- SDL_Joystick *joystick;
- SDL_Joystick *joysticklist;
- const char *joystickname = NULL;
-
- if ((device_index < 0) || (device_index >= SDL_NumJoysticks())) {
- SDL_SetError("There are %d joysticks available", SDL_NumJoysticks());
- return (NULL);
- }
-
- joysticklist = SDL_joysticks;
- /* If the joystick is already open, return it
- * it is important that we have a single joystick * for each instance id
- */
- while (joysticklist) {
- if (SDL_SYS_GetInstanceIdOfDeviceIndex(device_index) == joysticklist->instance_id) {
- joystick = joysticklist;
- ++joystick->ref_count;
- return (joystick);
- }
- joysticklist = joysticklist->next;
- }
-
- /* Create and initialize the joystick */
- joystick = (SDL_Joystick *) SDL_malloc((sizeof *joystick));
- if (joystick == NULL) {
- SDL_OutOfMemory();
- return NULL;
- }
-
- SDL_memset(joystick, 0, (sizeof *joystick));
- if (SDL_SYS_JoystickOpen(joystick, device_index) < 0) {
- SDL_free(joystick);
- return NULL;
- }
-
- joystickname = SDL_SYS_JoystickNameForDeviceIndex(device_index);
- if (joystickname)
- joystick->name = SDL_strdup(joystickname);
- else
- joystick->name = NULL;
-
- if (joystick->naxes > 0) {
- joystick->axes = (Sint16 *) SDL_malloc(joystick->naxes * sizeof(Sint16));
- joystick->axes_zero = (Sint16 *) SDL_malloc(joystick->naxes * sizeof(Sint16));
- }
- if (joystick->nhats > 0) {
- joystick->hats = (Uint8 *) SDL_malloc
- (joystick->nhats * sizeof(Uint8));
- }
- if (joystick->nballs > 0) {
- joystick->balls = (struct balldelta *) SDL_malloc
- (joystick->nballs * sizeof(*joystick->balls));
- }
- if (joystick->nbuttons > 0) {
- joystick->buttons = (Uint8 *) SDL_malloc
- (joystick->nbuttons * sizeof(Uint8));
- }
- if (((joystick->naxes > 0) && !joystick->axes)
- || ((joystick->nhats > 0) && !joystick->hats)
- || ((joystick->nballs > 0) && !joystick->balls)
- || ((joystick->nbuttons > 0) && !joystick->buttons)) {
- SDL_OutOfMemory();
- SDL_JoystickClose(joystick);
- return NULL;
- }
- if (joystick->axes) {
- SDL_memset(joystick->axes, 0, joystick->naxes * sizeof(Sint16));
- SDL_memset(joystick->axes_zero, 0, joystick->naxes * sizeof(Sint16));
- }
- if (joystick->hats) {
- SDL_memset(joystick->hats, 0, joystick->nhats * sizeof(Uint8));
- }
- if (joystick->balls) {
- SDL_memset(joystick->balls, 0,
- joystick->nballs * sizeof(*joystick->balls));
- }
- if (joystick->buttons) {
- SDL_memset(joystick->buttons, 0, joystick->nbuttons * sizeof(Uint8));
- }
- joystick->epowerlevel = SDL_JOYSTICK_POWER_UNKNOWN;
-
- /* Add joystick to list */
- ++joystick->ref_count;
- /* Link the joystick in the list */
- joystick->next = SDL_joysticks;
- SDL_joysticks = joystick;
-
- SDL_SYS_JoystickUpdate(joystick);
-
- return (joystick);
-}
-
-
-/*
- * Checks to make sure the joystick is valid.
- */
-int
-SDL_PrivateJoystickValid(SDL_Joystick * joystick)
-{
- int valid;
-
- if (joystick == NULL) {
- SDL_SetError("Joystick hasn't been opened yet");
- valid = 0;
- } else {
- valid = 1;
- }
-
- return valid;
-}
-
-/*
- * Get the number of multi-dimensional axis controls on a joystick
- */
-int
-SDL_JoystickNumAxes(SDL_Joystick * joystick)
-{
- if (!SDL_PrivateJoystickValid(joystick)) {
- return (-1);
- }
- return (joystick->naxes);
-}
-
-/*
- * Get the number of hats on a joystick
- */
-int
-SDL_JoystickNumHats(SDL_Joystick * joystick)
-{
- if (!SDL_PrivateJoystickValid(joystick)) {
- return (-1);
- }
- return (joystick->nhats);
-}
-
-/*
- * Get the number of trackballs on a joystick
- */
-int
-SDL_JoystickNumBalls(SDL_Joystick * joystick)
-{
- if (!SDL_PrivateJoystickValid(joystick)) {
- return (-1);
- }
- return (joystick->nballs);
-}
-
-/*
- * Get the number of buttons on a joystick
- */
-int
-SDL_JoystickNumButtons(SDL_Joystick * joystick)
-{
- if (!SDL_PrivateJoystickValid(joystick)) {
- return (-1);
- }
- return (joystick->nbuttons);
-}
-
-/*
- * Get the current state of an axis control on a joystick
- */
-Sint16
-SDL_JoystickGetAxis(SDL_Joystick * joystick, int axis)
-{
- Sint16 state;
-
- if (!SDL_PrivateJoystickValid(joystick)) {
- return (0);
- }
- if (axis < joystick->naxes) {
- state = joystick->axes[axis];
- } else {
- SDL_SetError("Joystick only has %d axes", joystick->naxes);
- state = 0;
- }
- return (state);
-}
-
-/*
- * Get the current state of a hat on a joystick
- */
-Uint8
-SDL_JoystickGetHat(SDL_Joystick * joystick, int hat)
-{
- Uint8 state;
-
- if (!SDL_PrivateJoystickValid(joystick)) {
- return (0);
- }
- if (hat < joystick->nhats) {
- state = joystick->hats[hat];
- } else {
- SDL_SetError("Joystick only has %d hats", joystick->nhats);
- state = 0;
- }
- return (state);
-}
-
-/*
- * Get the ball axis change since the last poll
- */
-int
-SDL_JoystickGetBall(SDL_Joystick * joystick, int ball, int *dx, int *dy)
-{
- int retval;
-
- if (!SDL_PrivateJoystickValid(joystick)) {
- return (-1);
- }
-
- retval = 0;
- if (ball < joystick->nballs) {
- if (dx) {
- *dx = joystick->balls[ball].dx;
- }
- if (dy) {
- *dy = joystick->balls[ball].dy;
- }
- joystick->balls[ball].dx = 0;
- joystick->balls[ball].dy = 0;
- } else {
- return SDL_SetError("Joystick only has %d balls", joystick->nballs);
- }
- return (retval);
-}
-
-/*
- * Get the current state of a button on a joystick
- */
-Uint8
-SDL_JoystickGetButton(SDL_Joystick * joystick, int button)
-{
- Uint8 state;
-
- if (!SDL_PrivateJoystickValid(joystick)) {
- return (0);
- }
- if (button < joystick->nbuttons) {
- state = joystick->buttons[button];
- } else {
- SDL_SetError("Joystick only has %d buttons", joystick->nbuttons);
- state = 0;
- }
- return (state);
-}
-
-/*
- * Return if the joystick in question is currently attached to the system,
- * \return SDL_FALSE if not plugged in, SDL_TRUE if still present.
- */
-SDL_bool
-SDL_JoystickGetAttached(SDL_Joystick * joystick)
-{
- if (!SDL_PrivateJoystickValid(joystick)) {
- return SDL_FALSE;
- }
-
- return SDL_SYS_JoystickAttached(joystick);
-}
-
-/*
- * Get the instance id for this opened joystick
- */
-SDL_JoystickID
-SDL_JoystickInstanceID(SDL_Joystick * joystick)
-{
- if (!SDL_PrivateJoystickValid(joystick)) {
- return (-1);
- }
-
- return (joystick->instance_id);
-}
-
-/*
- * Find the SDL_Joystick that owns this instance id
- */
-SDL_Joystick *
-SDL_JoystickFromInstanceID(SDL_JoystickID joyid)
-{
- SDL_Joystick *joystick = SDL_joysticks;
- while (joystick) {
- if (joystick->instance_id == joyid) {
- return joystick;
- }
- joystick = joystick->next;
- }
-
- return NULL;
-}
-
-/*
- * Get the friendly name of this joystick
- */
-const char *
-SDL_JoystickName(SDL_Joystick * joystick)
-{
- if (!SDL_PrivateJoystickValid(joystick)) {
- return (NULL);
- }
-
- return (joystick->name);
-}
-
-/*
- * Close a joystick previously opened with SDL_JoystickOpen()
- */
-void
-SDL_JoystickClose(SDL_Joystick * joystick)
-{
- SDL_Joystick *joysticklist;
- SDL_Joystick *joysticklistprev;
-
- if (!joystick) {
- return;
- }
-
- /* First decrement ref count */
- if (--joystick->ref_count > 0) {
- return;
- }
-
- if (joystick == SDL_updating_joystick) {
- return;
- }
-
- SDL_SYS_JoystickClose(joystick);
- joystick->hwdata = NULL;
-
- joysticklist = SDL_joysticks;
- joysticklistprev = NULL;
- while (joysticklist) {
- if (joystick == joysticklist) {
- if (joysticklistprev) {
- /* unlink this entry */
- joysticklistprev->next = joysticklist->next;
- } else {
- SDL_joysticks = joystick->next;
- }
- break;
- }
- joysticklistprev = joysticklist;
- joysticklist = joysticklist->next;
- }
-
- SDL_free(joystick->name);
-
- /* Free the data associated with this joystick */
- SDL_free(joystick->axes);
- SDL_free(joystick->hats);
- SDL_free(joystick->balls);
- SDL_free(joystick->buttons);
- SDL_free(joystick);
-}
-
-void
-SDL_JoystickQuit(void)
-{
- /* Make sure we're not getting called in the middle of updating joysticks */
- SDL_assert(!SDL_updating_joystick);
-
- /* Stop the event polling */
- while (SDL_joysticks) {
- SDL_joysticks->ref_count = 1;
- SDL_JoystickClose(SDL_joysticks);
- }
-
- /* Quit the joystick setup */
- SDL_SYS_JoystickQuit();
-
-#if !SDL_EVENTS_DISABLED
- SDL_QuitSubSystem(SDL_INIT_EVENTS);
-#endif
-}
-
-
-static SDL_bool
-SDL_PrivateJoystickShouldIgnoreEvent()
-{
- if (SDL_joystick_allows_background_events) {
- return SDL_FALSE;
- }
-
- if (SDL_WasInit(SDL_INIT_VIDEO)) {
- if (SDL_GetKeyboardFocus() == NULL) {
- /* Video is initialized and we don't have focus, ignore the event. */
- return SDL_TRUE;
- } else {
- return SDL_FALSE;
- }
- }
-
- /* Video subsystem wasn't initialized, always allow the event */
- return SDL_FALSE;
-}
-
-/* These are global for SDL_sysjoystick.c and SDL_events.c */
-
-void SDL_PrivateJoystickAdded(int device_index)
-{
-#if !SDL_EVENTS_DISABLED
- SDL_Event event;
-
- event.type = SDL_JOYDEVICEADDED;
-
- if (SDL_GetEventState(event.type) == SDL_ENABLE) {
- event.jdevice.which = device_index;
- if ( (SDL_EventOK == NULL) ||
- (*SDL_EventOK) (SDL_EventOKParam, &event) ) {
- SDL_PushEvent(&event);
- }
- }
-#endif /* !SDL_EVENTS_DISABLED */
-}
-
-/*
- * If there is an existing add event in the queue, it needs to be modified
- * to have the right value for which, because the number of controllers in
- * the system is now one less.
- */
-static void UpdateEventsForDeviceRemoval()
-{
- int i, num_events;
- SDL_Event *events;
-
- num_events = SDL_PeepEvents(NULL, 0, SDL_PEEKEVENT, SDL_JOYDEVICEADDED, SDL_JOYDEVICEADDED);
- if (num_events <= 0) {
- return;
- }
-
- events = SDL_stack_alloc(SDL_Event, num_events);
- if (!events) {
- return;
- }
-
- num_events = SDL_PeepEvents(events, num_events, SDL_GETEVENT, SDL_JOYDEVICEADDED, SDL_JOYDEVICEADDED);
- for (i = 0; i < num_events; ++i) {
- --events[i].jdevice.which;
- }
- SDL_PeepEvents(events, num_events, SDL_ADDEVENT, 0, 0);
-
- SDL_stack_free(events);
-}
-
-void SDL_PrivateJoystickRemoved(SDL_JoystickID device_instance)
-{
-#if !SDL_EVENTS_DISABLED
- SDL_Event event;
-
- event.type = SDL_JOYDEVICEREMOVED;
-
- if (SDL_GetEventState(event.type) == SDL_ENABLE) {
- event.jdevice.which = device_instance;
- if ( (SDL_EventOK == NULL) ||
- (*SDL_EventOK) (SDL_EventOKParam, &event) ) {
- SDL_PushEvent(&event);
- }
- }
-
- UpdateEventsForDeviceRemoval();
-#endif /* !SDL_EVENTS_DISABLED */
-}
-
-int
-SDL_PrivateJoystickAxis(SDL_Joystick * joystick, Uint8 axis, Sint16 value)
-{
- int posted;
-
- /* Make sure we're not getting garbage or duplicate events */
- if (axis >= joystick->naxes) {
- return 0;
- }
- if (value == joystick->axes[axis]) {
- return 0;
- }
-
- /* We ignore events if we don't have keyboard focus, except for centering
- * events.
- */
- if (SDL_PrivateJoystickShouldIgnoreEvent()) {
- if ((value > joystick->axes_zero[axis] && value >= joystick->axes[axis]) ||
- (value < joystick->axes_zero[axis] && value <= joystick->axes[axis])) {
- return 0;
- }
- }
-
- /* Update internal joystick state */
- joystick->axes[axis] = value;
-
- /* Post the event, if desired */
- posted = 0;
-#if !SDL_EVENTS_DISABLED
- if (SDL_GetEventState(SDL_JOYAXISMOTION) == SDL_ENABLE) {
- SDL_Event event;
- event.type = SDL_JOYAXISMOTION;
- event.jaxis.which = joystick->instance_id;
- event.jaxis.axis = axis;
- event.jaxis.value = value;
- posted = SDL_PushEvent(&event) == 1;
- }
-#endif /* !SDL_EVENTS_DISABLED */
- return (posted);
-}
-
-int
-SDL_PrivateJoystickHat(SDL_Joystick * joystick, Uint8 hat, Uint8 value)
-{
- int posted;
-
- /* Make sure we're not getting garbage or duplicate events */
- if (hat >= joystick->nhats) {
- return 0;
- }
- if (value == joystick->hats[hat]) {
- return 0;
- }
-
- /* We ignore events if we don't have keyboard focus, except for centering
- * events.
- */
- if (SDL_PrivateJoystickShouldIgnoreEvent()) {
- if (value != SDL_HAT_CENTERED) {
- return 0;
- }
- }
-
- /* Update internal joystick state */
- joystick->hats[hat] = value;
-
- /* Post the event, if desired */
- posted = 0;
-#if !SDL_EVENTS_DISABLED
- if (SDL_GetEventState(SDL_JOYHATMOTION) == SDL_ENABLE) {
- SDL_Event event;
- event.jhat.type = SDL_JOYHATMOTION;
- event.jhat.which = joystick->instance_id;
- event.jhat.hat = hat;
- event.jhat.value = value;
- posted = SDL_PushEvent(&event) == 1;
- }
-#endif /* !SDL_EVENTS_DISABLED */
- return (posted);
-}
-
-int
-SDL_PrivateJoystickBall(SDL_Joystick * joystick, Uint8 ball,
- Sint16 xrel, Sint16 yrel)
-{
- int posted;
-
- /* Make sure we're not getting garbage events */
- if (ball >= joystick->nballs) {
- return 0;
- }
-
- /* We ignore events if we don't have keyboard focus. */
- if (SDL_PrivateJoystickShouldIgnoreEvent()) {
- return 0;
- }
-
- /* Update internal mouse state */
- joystick->balls[ball].dx += xrel;
- joystick->balls[ball].dy += yrel;
-
- /* Post the event, if desired */
- posted = 0;
-#if !SDL_EVENTS_DISABLED
- if (SDL_GetEventState(SDL_JOYBALLMOTION) == SDL_ENABLE) {
- SDL_Event event;
- event.jball.type = SDL_JOYBALLMOTION;
- event.jball.which = joystick->instance_id;
- event.jball.ball = ball;
- event.jball.xrel = xrel;
- event.jball.yrel = yrel;
- posted = SDL_PushEvent(&event) == 1;
- }
-#endif /* !SDL_EVENTS_DISABLED */
- return (posted);
-}
-
-int
-SDL_PrivateJoystickButton(SDL_Joystick * joystick, Uint8 button, Uint8 state)
-{
- int posted;
-#if !SDL_EVENTS_DISABLED
- SDL_Event event;
-
- switch (state) {
- case SDL_PRESSED:
- event.type = SDL_JOYBUTTONDOWN;
- break;
- case SDL_RELEASED:
- event.type = SDL_JOYBUTTONUP;
- break;
- default:
- /* Invalid state -- bail */
- return (0);
- }
-#endif /* !SDL_EVENTS_DISABLED */
-
- /* Make sure we're not getting garbage or duplicate events */
- if (button >= joystick->nbuttons) {
- return 0;
- }
- if (state == joystick->buttons[button]) {
- return 0;
- }
-
- /* We ignore events if we don't have keyboard focus, except for button
- * release. */
- if (SDL_PrivateJoystickShouldIgnoreEvent()) {
- if (state == SDL_PRESSED) {
- return 0;
- }
- }
-
- /* Update internal joystick state */
- joystick->buttons[button] = state;
-
- /* Post the event, if desired */
- posted = 0;
-#if !SDL_EVENTS_DISABLED
- if (SDL_GetEventState(event.type) == SDL_ENABLE) {
- event.jbutton.which = joystick->instance_id;
- event.jbutton.button = button;
- event.jbutton.state = state;
- posted = SDL_PushEvent(&event) == 1;
- }
-#endif /* !SDL_EVENTS_DISABLED */
- return (posted);
-}
-
-void
-SDL_JoystickUpdate(void)
-{
- SDL_Joystick *joystick;
-
- joystick = SDL_joysticks;
- while (joystick) {
- SDL_Joystick *joysticknext;
- /* save off the next pointer, the Update call may cause a joystick removed event
- * and cause our joystick pointer to be freed
- */
- joysticknext = joystick->next;
-
- SDL_updating_joystick = joystick;
-
- SDL_SYS_JoystickUpdate(joystick);
-
- if (joystick->force_recentering) {
- int i;
-
- /* Tell the app that everything is centered/unpressed... */
- for (i = 0; i < joystick->naxes; i++) {
- SDL_PrivateJoystickAxis(joystick, i, joystick->axes_zero[i]);
- }
-
- for (i = 0; i < joystick->nbuttons; i++) {
- SDL_PrivateJoystickButton(joystick, i, 0);
- }
-
- for (i = 0; i < joystick->nhats; i++) {
- SDL_PrivateJoystickHat(joystick, i, SDL_HAT_CENTERED);
- }
-
- joystick->force_recentering = SDL_FALSE;
- }
-
- SDL_updating_joystick = NULL;
-
- /* If the joystick was closed while updating, free it here */
- if (joystick->ref_count <= 0) {
- SDL_JoystickClose(joystick);
- }
-
- joystick = joysticknext;
- }
-
- /* this needs to happen AFTER walking the joystick list above, so that any
- dangling hardware data from removed devices can be free'd
- */
- SDL_SYS_JoystickDetect();
-}
-
-int
-SDL_JoystickEventState(int state)
-{
-#if SDL_EVENTS_DISABLED
- return SDL_DISABLE;
-#else
- const Uint32 event_list[] = {
- SDL_JOYAXISMOTION, SDL_JOYBALLMOTION, SDL_JOYHATMOTION,
- SDL_JOYBUTTONDOWN, SDL_JOYBUTTONUP, SDL_JOYDEVICEADDED, SDL_JOYDEVICEREMOVED
- };
- unsigned int i;
-
- switch (state) {
- case SDL_QUERY:
- state = SDL_DISABLE;
- for (i = 0; i < SDL_arraysize(event_list); ++i) {
- state = SDL_EventState(event_list[i], SDL_QUERY);
- if (state == SDL_ENABLE) {
- break;
- }
- }
- break;
- default:
- for (i = 0; i < SDL_arraysize(event_list); ++i) {
- SDL_EventState(event_list[i], state);
- }
- break;
- }
- return (state);
-#endif /* SDL_EVENTS_DISABLED */
-}
-
-/* return the guid for this index */
-SDL_JoystickGUID SDL_JoystickGetDeviceGUID(int device_index)
-{
- if ((device_index < 0) || (device_index >= SDL_NumJoysticks())) {
- SDL_JoystickGUID emptyGUID;
- SDL_SetError("There are %d joysticks available", SDL_NumJoysticks());
- SDL_zero(emptyGUID);
- return emptyGUID;
- }
- return SDL_SYS_JoystickGetDeviceGUID(device_index);
-}
-
-/* return the guid for this opened device */
-SDL_JoystickGUID SDL_JoystickGetGUID(SDL_Joystick * joystick)
-{
- if (!SDL_PrivateJoystickValid(joystick)) {
- SDL_JoystickGUID emptyGUID;
- SDL_zero(emptyGUID);
- return emptyGUID;
- }
- return SDL_SYS_JoystickGetGUID(joystick);
-}
-
-/* convert the guid to a printable string */
-void SDL_JoystickGetGUIDString(SDL_JoystickGUID guid, char *pszGUID, int cbGUID)
-{
- static const char k_rgchHexToASCII[] = "0123456789abcdef";
- int i;
-
- if ((pszGUID == NULL) || (cbGUID <= 0)) {
- return;
- }
-
- for (i = 0; i < sizeof(guid.data) && i < (cbGUID-1)/2; i++) {
- /* each input byte writes 2 ascii chars, and might write a null byte. */
- /* If we don't have room for next input byte, stop */
- unsigned char c = guid.data[i];
-
- *pszGUID++ = k_rgchHexToASCII[c >> 4];
- *pszGUID++ = k_rgchHexToASCII[c & 0x0F];
- }
- *pszGUID = '\0';
-}
-
-
-/*-----------------------------------------------------------------------------
- * Purpose: Returns the 4 bit nibble for a hex character
- * Input : c -
- * Output : unsigned char
- *-----------------------------------------------------------------------------*/
-static unsigned char nibble(char c)
-{
- if ((c >= '0') && (c <= '9')) {
- return (unsigned char)(c - '0');
- }
-
- if ((c >= 'A') && (c <= 'F')) {
- return (unsigned char)(c - 'A' + 0x0a);
- }
-
- if ((c >= 'a') && (c <= 'f')) {
- return (unsigned char)(c - 'a' + 0x0a);
- }
-
- /* received an invalid character, and no real way to return an error */
- /* AssertMsg1(false, "Q_nibble invalid hex character '%c' ", c); */
- return 0;
-}
-
-
-/* convert the string version of a joystick guid to the struct */
-SDL_JoystickGUID SDL_JoystickGetGUIDFromString(const char *pchGUID)
-{
- SDL_JoystickGUID guid;
- int maxoutputbytes= sizeof(guid);
- size_t len = SDL_strlen(pchGUID);
- Uint8 *p;
- size_t i;
-
- /* Make sure it's even */
- len = (len) & ~0x1;
-
- SDL_memset(&guid, 0x00, sizeof(guid));
-
- p = (Uint8 *)&guid;
- for (i = 0; (i < len) && ((p - (Uint8 *)&guid) < maxoutputbytes); i+=2, p++) {
- *p = (nibble(pchGUID[i]) << 4) | nibble(pchGUID[i+1]);
- }
-
- return guid;
-}
-
-
-/* update the power level for this joystick */
-void SDL_PrivateJoystickBatteryLevel(SDL_Joystick * joystick, SDL_JoystickPowerLevel ePowerLevel)
-{
- joystick->epowerlevel = ePowerLevel;
-}
-
-
-/* return its power level */
-SDL_JoystickPowerLevel SDL_JoystickCurrentPowerLevel(SDL_Joystick * joystick)
-{
- if (!SDL_PrivateJoystickValid(joystick)) {
- return (SDL_JOYSTICK_POWER_UNKNOWN);
- }
- return joystick->epowerlevel;
-}
-
-
-/* vi: set ts=4 sw=4 expandtab: */